SudokuGT
Greater-than sudoku: inequality signs instead of givens.
Greater-than sudoku: no givens, only inequality signs between neighbouring cells. Fill in 1–N per row, column and box so every inequality holds.
1<∧8>∨7∨2<∧9>∨6∨5>∨4>∧3∧9>∨5<∨6∨4>∧1<∧3∧2<∧7<∨8∨3>2<45<7<89>6>15<∨6>∧3∧1<∧8>∨7∨4<∨9>∨2∧4<∨7<∨9∨3<∧6>∨2∧1<∧8>∨5∧2>1<89>4<57>3<67>∧4<∨5∨6>∧3>∨1∧8>∨2<∧9∨8>∨3>∧1∧7>∧2<∧9∨6>∨5>∨4∧6<9>28>5>43>1<7